Outdoor armchair



FIG. 1 is a front and top perspective view of an outdoor armchair showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a side perspective view thereof, the side opposite that shown in FIG. 3 being the mirror image thereof;

FIG. 4 is a top and side rear perspective view thereof;

FIG. 5 is a rear perspective view thereof;

FIG. 6 is a top perspective view thereof; and

FIG. 7 is a bottom perspective view thereof. 

The ornamental design for an outdoor armchair, as shown and described. 